//
// timer.cpp
// ~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include <iostream>
#include <boost/asio.hpp>
#include <boost/bind.hpp>

class printer
{
public:
	printer(boost::asio::io_context& io)
		: timer_(io, boost::asio::chrono::seconds(1)),
		count_(0)
	{
		timer_.async_wait(boost::bind(&printer::print, this));
	}

	~printer()
	{
		std::cout << "Final count is " << count_ << std::endl;
	}

	void print()
	{
		if (count_ < 5)
		{
			std::cout << count_ << std::endl;
			++count_;

			timer_.expires_at(timer_.expiry() + boost::asio::chrono::seconds(1));
			timer_.async_wait(boost::bind(&printer::print, this));
		}
	}

private:
	boost::asio::steady_timer timer_;
	int count_;
};

int main()
{
	boost::asio::io_context io;
	printer p(io);
	io.run();

#ifdef _WIN32
	system("pause");
#endif
	return 0;
}
